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Device for system diagnosis

a system diagnosis and device technology, applied in the direction of process and machine control, testing/monitoring control system, instruments, etc., can solve the problems of maintenance devices according to the known art that are not suitable for taking these changes, require regular updating, and maintenance devices according to the known ar

Active Publication Date: 2011-02-17
THALES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The maintenance devices according to the known art are not suitable for taking these changes into account.
The drawback of these maintenance systems is that they require regular updating to take into account modifications of configurations or of the general state of the aeroplane.
The maintenance devices according to the known art present another major drawback, which is the poor management of the quantity of information arising from the monitorings, on account of the use of empirical correlation rules.
Faced with a large amount of more or less relevant information, current devices turn out to be inadequate and non-optimized.

Method used

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Examples

Experimental program
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first embodiment

[0092]FIG. 5 presents an example of a diagnosis system according to the invention. This embodiment is said to be hierarchized. In such a maintenance system, the computation means of the device according to the invention are implemented on three different hierarchical levels of the system 200. A first hierarchical level 510 implements means 201 for monitoring. In the example the first hierarchical level 510 is a so-called equipment level. The example comprises four items of equipment 511,512,513,514 each implementing means for monitoring 511.1, 512.1, 513.1, 514.1.

[0093]A second level 520, higher than the first level, implements on the one hand means for the determination of a set of observations 202 on the basis of the messages arising from the means 201 for monitoring of the first level and, on the other hand, means for the determination of indictments 203. A processing unit of the second level 520 implements means for the determination of a set of observations 202 with observation...

second embodiment

[0095]FIG. 6 presents an example of a device for diagnosis according to the invention. This embodiment is said to be centralized. In such a maintenance system, the computation means of the device according to the invention are implemented on two different hierarchical levels of the system 200.

[0096]A first level implements means for monitoring and means for the determination of a set of observations. In the example the first hierarchical level 610 is a so-called equipment level. The example comprises four items of equipment 611, 612, 613, 614 each implementing means for monitoring 611.1, 612.1, 613.1, 614.1 and means for the determination of a set of observations 611.2, 612.2, 613.2, 614.2.

[0097]A second level, higher than the first level, implements means for the determination of a set of observations 621.1 on the basis of the sets of observations arising from the first level, means for the determination of indictments 621.2 and means for the determination of the maintenance action...

third embodiment

[0098]FIG. 9 presents an example of a diagnosis device according to the invention. This embodiment is an alternative of the so-called Hierarchized mode. In such a maintenance system, the computation means of the device according to the invention are implemented on three hierarchical levels, the first two of which remain inside the item of equipment 91. The first level groups together processing units of Shop Replaceable Unit type corresponding to electronic modules internal to an item of equipment and the second level corresponds to a maintenance application internal to the item of equipment.

[0099]A first hierarchical level 91 implements means 201 for monitoring. In the example the first hierarchical level 91 is a level termed SRU (Shop Replaceable Unit) and corresponds to the electronic modules internal to an item of equipment. The example comprises three SRUs 912, 913, 914 each implementing means for monitoring 912.1, 913.1, 914.1.

[0100]A second level, still internal to the item o...

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Abstract

The invention relates to a device for system diagnosis of an aircraft. The device includes: means for the monitoring of equipment of the system, the means for emitting messages of observations on the basis of effects produced by equipment; means for the determination of a set of observations on the basis of the messages of observations arising from the monitoring of a log of the messages of observations and of a model representing a current state of the system; means for the determination of indictments on the basis of observations of the set of observations and of a behavioural model of the system, the indictments being logical relations between operating modes of equipment having produced effects; and means for the determination of maintenance operations on the basis of the indictments.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority to foreign French patent application No. FR 09 03981, filed on Aug. 14, 2009, the disclosure of which is incorporated by reference in its entirety.FIELD OF THE INVENTION[0002]The invention relates to the maintenance of a system of an aircraft composed of one or more items of equipment, such that this system fulfils various functions necessary for the accomplishment of a flight.BACKGROUND OF THE INVENTION[0003]The components of this system communicate with one another and with the exterior environment by way of a physical network. The set of equipment, including the network, constitutes a system called the system under diagnosis.[0004]To improve the degree of confidence accorded to these items of equipment and to ensure their maintenance, monitoring of their proper operation is undertaken, as often as possible, for each of them, consisting in providing them with internal, hardware and / or software mechanisms ...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG05B23/0245G05B2219/13G06F11/079G06F11/0748G06F11/0739G05B2223/06
Inventor GAUDAN, STEPHANIEFOURNIER, FRANCOISSANNINO, CHRISTIANROBERT, LAURENT
Owner THALES SA
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